Section: User Commands (1)
Updated: March 2016
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truncate - shrink or extend the size of a file to the specified size
Shrink or extend the size of each FILE to the specified size
A FILE argument that does not exist is created.
If a FILE is larger than the specified size, the extra data is lost.
If a FILE is shorter, it is extended and the extended part (hole)
reads as zero bytes.
Mandatory arguments to long options are mandatory for short options too.
- -c, --no-create
do not create any files
- -o, --io-blocks
treat SIZE as number of IO blocks instead of bytes
- -r, --reference=RFILE
base size on RFILE
- -s, --size=SIZE
set or adjust the file size by SIZE
display this help and exit
output version information and exit
SIZE is an integer and optional unit (example: 10M is 10*1024*1024). Units
are K, M, G, T, P, E, Z, Y (powers of 1024) or KB, MB, ... (powers of 1000).
SIZE may also be prefixed by one of the following modifying characters:
'+' extend by, '-' reduce by, '<' at most, '>' at least,
'/' round down to multiple of, '%' round up to multiple of.
Written by Padraig Brady.
Report truncate bugs to firstname.lastname@example.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
Report truncate translation bugs to <http://translationproject.org/team/>
Copyright © 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
dd(1), truncate(2), ftruncate(2)
The full documentation for
is maintained as a Texinfo manual. If the
programs are properly installed at your site, the command
info coreutils 'truncate invocation'
should give you access to the complete manual.
- REPORTING BUGS
- SEE ALSO
This document was created by
using the manual pages.
Time: 21:22:43 GMT, January 18, 2018